Grease-cup.



E. H. PRESBREY.

GREASE CUP.

APPLIOATION FILED smmz, 191a.

1,093,472. Patented Apr. 14, 1914..

b runt 1 601 M in Edwa/dfi Prasray. g: 2 5 W Rife megs COLUMBIAPLANOGRAPN COnWASHINGTON. D. c.

EDWARD H. PRESBBEY, OF NEW YORK, N. Y. i

' can ass-cur.

Specification of Letters Patent.

Patented Apr. 1a, 1914..

Application filed September 2, 1913. Serial No. 787,652.

of the city of New York, borough of Man hattan, in the county and Stateof New York, have invented a new and Improved Grease-Cup, of which thefollowing is a full, clear, and exact description.

This invention relates to lubricators 'or grease cups of the force feed.type, and has particular reference to an improved manner of mounting andoperating the follower which serves to force the grease from the 'llioredefinitely stated, the invention provides a base adapted to be securedadj acent.

a bearing, said base having a delivery tube, and means for quicklyattaching thereto a cup filled with grease, special means being providedto prevent loss of said cup from the base or any tendency for the partsto rattle when in use. 7 p

The foregoing and other objects of the invention will hereinafter bemore fully described and claimed and illustrated in the drawings forminga part of this specification in which like characters of referenceindicate corresponding parts in all the views, and in which- Figure 1 isa side elevation of a preferred form of the invention shown as appliedto a bearing; Fig. 2 is a vertical section of the grease cup completewith the parts in the position which they will occupy when the cup isfilled with grease; Fig. 3 is a transverse section on the line 3-3 ofFig. 2, but on a larger scale; and Fig. 4 is a side elevation, partly insection, indicating the follower in an elevated position.

At a I show a grease cup adapted to be connected to any suitable bearingfor a movable part, as shown at b. The device in cludes a cup proper cof substantially hollow cylindrical form but having its outer end closedand provided with any suitable means to facilitate rotation thereof,such means being indicated by milling at a. Said cup 0 is internallythreaded as shown The inner end of the cup 0 is open for theintroduction of the grease and is slightly beveled on its outer surfaceto facilitate the assemblage of the device.

. The base 03 is provided with a nipple d for connection with thebearing and is provided with an outwardly projecting flange al toreceive the inner end of the cup 0.

The cup and flange are smooth where they cooperate with each other andare adapted V to be locked by means of a split spring ring 6. Said ringis seated in a circumferential groove f formed in the interior of theflange cl, and when the cup 0 is forced down into said flange, thebeveled edge thereof forces the spring 6 apart so as to permit suchintroduction. "When the cup is forced inwardly suiiiciently far againstthe tension of a fiat spring g, the spring 6 will snap into a groove fextending around the cup 0 and registering with the groove f. Saidspring ring, therefore, prevents any possibility of the cup 0 losing outof place or being withdrawn by any unauthorizedperson except as intendedby the regular operation of the device. The spring 9 maintainssufficient tension upon the inner end of the cup to pre vent rattling ofthe parts 0 and (Z.

As above premised, the base d is provided with a central delivery pipe hin the 7 form of a hollow stem extending outwardly toward the outer endof the cup 0. Said tube 72, is preferably provided with a rib or key'h"and a follower h guided along said tube and prevented from rotationthereon by means of said rib. The follower is externally. screw threadedfor direct cooperation with the thread 0 of the cup. With the followershown in the position of Fig.' 2, the end of the cup with grease may beintroduced directly into the base 61 until it engages the thread of thefollower upon which it may be turned as, for instance, in a right handdirection, causing the follower to approach the closed end of the cup.During this movement of the cup it may be forced sufficiently far intothebase to cause the spring e to interlock the parts together. Thegrease may be forced from the cup through the tubular stem h until'thefollower reaches the closed end of the cup when the rotation will bestopped. In order to remove the cup for refilling or other purposes, itmust be turned in a reverse direction, causing the follower to be movedinwardly against the spring 9 which, serving as an abutment, will causethe unscrewing action to force the cup outwardly past the spring 0. Thefollower will then remain in such position until the cup is returned, asabove described.

Because of the screw threaded engagement between the cup and thefollower, leakage or loss of grease through such .0 loadedjoint isunlikely to occur. I find, however, that it is desirable to provide aflexible packing washer or gasket ?1 at the center of the follower fordirect cooperation with the tube 71-. Said gasket may be secured inplace by means of a metal washer '5.

Having thus described my invent-ion, I claim as new and desire to secureby Letters Patent 1. In a grease cup, the combination of a base havingan outwardly projecting hollow stem and a surrounding flange, a cupadapted to be applied on the outside of said stem and fitted at one endwithin said flange, means to lock the cup and base together for normaloperation, a follower movable longitudinally but non-rotatably alongsaid stem, said cup and follower being screw threaded whereby therotation of the cup will cause the follower to approach one end of thecup to force the grease from the cup: through said hollow stem, and aspring be tween the follower and the base, substantially as set forth.

2. In a geas'e cup, the combination of a base having an outwardlyprojecting flange, a cup having one end closed and the other end open,the open end being seated within said flange, means to permit rotationof the cup but prevent longitudinal displacement thereof from theflange, delivery means for the grease through the base, a followerwithin the cup and having screw threaded engagement therewith, and meansconnected with the base to prevent rotation of the fol lower due to therotation of the cup and serving to cause the means normally holding thecup and base together to release the cup.

8. In a grease cup, the combination of a base having an outwardlyprojecting discharge tube and a concentric flange having a smoothinterior surface having a circumferential groove, a cup for greaseadapted to be projected into said flange and having its end within theflange slightly tapered and provided with an exterior groove adapted toregister with the aforesaid groove, a spring ring serving to lock thecup and flange together and yet permit rotation of the cup, a followerwithin the cup, and means to cause relative rotation between the cup andthe follower for the purpose of forcing grease from the cup through saidtube and also cause the cup to be forced outwardly from said springring, substantially as set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

EDWARD H. PRESBREY.

Witnesses:

GEO. L. BEELER, Gno. H. EMsLIE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. G.

